# Scrapy settings for scrapyExercise project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'scrapyExercise'

SPIDER_MODULES = ['scrapyExercise.spiders']
NEWSPIDER_MODULE = 'scrapyExercise.spiders'


# Crawl responsibly by identifying yourself (and your website) on the user-agent
# USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.183 Safari/537.36'

# Obey robots.txt rules
ROBOTSTXT_OBEY = False

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
#}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
# SPIDER_MIDDLEWARES = {
#    'scrapy_splash.SplashDeduplicateArgsMiddleware': 100,
# }

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
#    # 'scrapyExercise.middlewares.ToutiaoDownloaderMiddleware': 543,
#    'scrapy_splash.SplashCookiesMiddleware':723,
#    'scrapy_splash.SplashMiddleware':725,
#    'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware':810,
    'scrapyExercise.middlewares.CrawlerUserAgentMiddleware': 100,
}

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
# ITEM_PIPELINES = {
#    # 'scrapyExercise.pipelines.FilterPipeline': 200,
#    # 'scrapyExercise.pipelines.CSVPipeline': 300,
#     #'scrapy.pipelines.files.FilesPipeline':200,
#     'scrapy_redis.pipelines.RedisPipeline': 100,
#     'scrapyExercise.pipelines.SaveImagePipeline':200
# }

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

# # mysql数据库
# MYSQL_HOST = '192.168.0.122'
# MYSQL_USER = 'root'
# MYSQL_PWD  = 'xxxxxx'
# MYSQL_NAME = 'fsh_crawler'
# MYSQL_PORT = 3306
#
# # redis数据库
# REDIS_HOST = "192.168.0.127"
# REDIS_PORT = 6379
# REDIS_DB = 0
# REDIS_PWD = 'xxxxxx'
#
# # 渲染服务的url
# SPLASH_URL = 'http://127.0.0.1:8050'
# # 去重过滤器
# # DUPEFILTER_CLASS = 'scrapy_splash.SplashAwareDupeFilter'
# # 使用Splash的Http缓存
# HTTPCACHE_STORAGE = 'scrapy_splash.SplashAwareFSCacheStorage'
#
# # 文件下载路径
# FILES_STORE = "./files/seaborn"
# # 文件120天过期
# FILES_EXPIRES = 120
# # 允许重定向
# MEDIA_ALLOW_REDIRECTS = True
# # 自定义URL建和结果键  对应的item中的两个字段名
# # FILES_URLS_FIELD = ''
# # FILES_RESULT_FIELD = ''
#
# # 图片下载路径
# IMAGES_STORE = "./files/images/shetu"
# # 创建缩略图并设置缩略图大小
# IMAGES_THUMBS = {
#     'small': (30,30),
#     'big': (50,50)
# }
# # 过滤尺寸过小的tupian
# IMAGES_MIN_WIDTH = 10
# IMAGES_MIN_HEIGHT = 10
# # 文件120天过期
# IMAGES_EXPIRES = 120

# # redis
# # 调度器
# SCHEDULER = 'scrapy_redis.scheduler.Scheduler'
# # 设置去重过滤器
# DUPEFILTER_CLASS = 'scrapy_redis.dupefilter.RFPDupeFilter'
# # 设置连接redis的url
# REDIS_URL = 'redis://:foobared:127.0.0.1:6379'
